PERCEPTION OF ULTRA-LOW FREQUENCY SINUSOIDAL PROPRIOCEPTIVE STIMULI.
AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OHIO
Pagination or Media Count:
Subjects judged change of direction of a sinusoidally oscillating table during exposure to seven frequencies within the range of 0.0125 to 0.8 Hz. Phase differences were computed by taking the difference between subjective judgment of change of direction and the actual change of direction of the table. These phase angles were obtained during four experimental conditions. Two conditions in which the subjects sat on the oscillating table with braces applied either to the hips or shoulders so that total body movement was constrained. And two conditions in which only the leg rested on the oscillating platform. The phase angles obtained at these conditions were compared with those obtained by previous investigators from subjects who experienced whole body displacement, that is, they received a vestibular stimulus in addition to stimulation of the skin, muscles, and joints as occurred in the present study. The pattern of phase angles between experiments was sufficiently different to cast doubt on the hypothesis that receptors of the skin, muscles, and joints accounted for the results in the prior experiment. Author
- Anatomy and Physiology